Bandless beater roll



Aug. 18, 1925. 1,550,517

F. B. DILT-s BANDLES S BEATER ROLL .Z-N ENTOR if@ BVM /TroR 'Ys Aug. 18, 1925.

F. B. DILTS BANDLESS HEATER ROLL Filed Jan. 29, 1925 2 Sheets-Sheet `2 IN1/N Tan B J6, Lf

rro'A :Ys

'Paiented Aug. 1s, i925.

UNITED STATES PAT|2-1NT OFFICE.

B. mms, or ruimen; NEW Yoax, AssreNoa To mms MACHINE wenns,

INC., or FULTON,l NEW aromi,

A conrona'rIoN or NEW You.

,Empress snaren Bom..

I Application iled'JanuaryfB, 1925. Serial No. 5,609.

To all 'whom t concern: 'I

Be it known that I,"F1:ANK Bft-Durs, citizen of the United States of America, and

a resident of Fulton, in the county of Oswego, in the State of New York, haveinvented new and-useful Improvements in Bandless Beater Rolls, of whichthe follow ing, taken in connection with the accom` pany' g drawings, is afull, cle ar,.and exact description. This" vention relatesto a beater lroll vfor beater engines? of the class set, forth in my piding application, Serial No. 710,588, filed y 2, 1924, adapted to be used for reducing paper stock to the desired consistencyl for -manufacture into paperand refers more particularly to the. construction of the-lybars and sufpporting drum therefor and` other means or securing the d bars to the drum. In machines of this' c aracter the beater roll and especially the ily bars are subjected to 4severe strains 4resulting in more 'or less frequent breaka e or other impairmentof the Aily barswhii, of course, necessitatesas frequent replacements.

These bars are usually secured in suitable slots in the periphery of the drum in such manner that any' one of them may be removed and replaced without disturbing the remaining bars, but under the practicemost commonly' employed the bars must be arranged with certain impact sides facing in the same direction of rotation sol that when replaced care must be taken to maintain this re ation as otherwise a reversal of the bars end for-end in the lslots and the drum'would cause irregular spacing and angular disposivangles to a radial plane tion of the impact faces and one of the main ob'ects of thepreSent invention 1s to provi e a lyvbar which may'be reversed end for end inany one of the slots of the drum and tosecure the bars in said slots in such' lmanner that each bar will form opposite outwardly-convergent impact faces at equal passing through the cutting edge ofthe bar.

In other words, I have sought to rovide durability with opposed outwar ly-convergent impact faces w ich, when placed in opera-` tive position on the drum, will be disposed at equal angles to a radial lane passing through the cutting edges'of t e bars so that the bars may be reversed end for end in their respective slots without varying the angleof impact or otherwise varying the,

mlform spacing of the cutting edges of the ars.

Another Objectis to provide simple and efcient means for reinforcing or bracing the bars against excessive vibration and thereby to increase the durability and working eiiiclency of the beater roll as a whole.

Other objects and uses relating to specific the following descriptiom In the drawings parts of the device will` be brought out in Figure 1 is a face view .partly invsection i of a beater roll embodying the features of beater roll.

Figure 4 is a perspective view of one of the wedges usedfor tightening the ily bar in the slots in the heads.`

Figure 5 is an enlarged perspective view of portions of 4the heads ofthe drum and some of the ily bars of the beater roll shovving the manner of mounting the same in the slots and for stiening or reinforcing the portions of the bars between the heads.

Fi ure 6 is an enlarged transverse, sectiona view ofone ofthe Hy bars and adjacent portion of one'v of the heads showing the wedges in operative position` for holding the fly bar in its slot against displacement.

Figure 7 is a topplan of a small portion of one ofthe end heads of the drum showing the adjacent. end of one of the ily bars operatively secured in its corresponding slot in said head.

Figure 8 is a perspective -view of one of the supplemental wedges for securing the fly bar in place. f v

opposite end heads 4- 1- and intermediate and co-axially upon a revolu `le' supporting ing provided with peripheralv slots -4- and -5- which are arranged i-n uniformly s aced; relation circumferentially so that the s ots of each head willl bein axial alignment with those of the other heads for llo 75. a fly bar in Vone of the end heads ofthe Asillustrated this beater roll comprises a corresponding number of fly bar -6- and wedges -7- and -7-.

The outer end walls of the slots 4 in the ends -1- are preferably closed to form end thrust abutments and peripheral bearings 8- for the adjacent ends of the fly bars while lthe slots -5- in the intermediate heads -2- extend from end to end of the peripheral faces thereof, said heads being provided with annular flanges or bear ings -9- at the bases of the slots -4- and 5-- to form additional support for the inner edges of adjacent portions of the ily bars.

rlhese fly bars are of uniform size and form and are of approximately twice the radial depth of the corresponding depth of the slot in which they are seated so that when placed in operative position approximately half of the radial width extends beyond the periphery of the drum heads -land -2- for cutting co-action with a suitable bed plate, not shown, but commonly used in beating engines of this type.

The outwardly projecting portion of each iiy bar +6 is provided with outwardly converging impact faces -10- forming opposite equal angles with a medial radial line or plane -apassing through the center of the cutting edge as -6- of the bar which allows said bar to be reversed end for end in its receiving slots without altering the angle of the impact face or varying the uniform spacing of the cutting edges 6- of the fly bars.

One side of the inner half of each bar is provided with a lengthwise recess 1lextending from end to end thereof and forming at the inner end of the recess a lengthwise rib -12- for a purpose presently described, the opposite side of the inner half of each bar being preferably disposed in the same plane as the corresponding impact I face 10-.

The slots -4 and -5- of the heads land -2- are dovetailed radially and tapered axially so that the opposite side walls of each slot converge outwardly and also axially, the open outer ends of said slots being of just sufficient width to permit the inner edges to be easily inserted and removed radially thereinto and therefrom while the portions of the heads at opposite sides of the slots form abutments to hold the bars against relative circumferential movement,` the side walls of the slots of the end heads being preferably convergent outwardly while the side walls of the intermediate heads may converge axially in either direction.

The inner portions of the bars -6--ex tend the entire distance between the end walls of the slots 4rin the end heads -1- and abut against the said end walls while their inner edges rest upon the annular flanges ,-9-, the outer portions of said inesatta bars being extended beyond the inner faces of the end Wall of the slots llof the end heads -1- to overhang the peripheral bearings -8- and preferably terminate in planes co-incident with the outer end faces of the end heads to act full length upon the stock.

The back Wall of the recess -11- of each bar 6-- is substantially flat and extends inwardly from the inner edge of the correspending impact face -lO- at a convergent angle to the opposite face or diagonally across the medial line -aso as to maintain a maximum thickness of the bar at the inner edges of the impact faces for stifi'ening purposes, the rib 19rat the inner edge of each bar being of sufiicient width to extend beyond the medial line which therefore passes through the rib.

W hen the upright bars are properly seated in their respective slots 4land -5 they are tightly secured therein by the wedges -7- and -7- which are driven in place by any suitable tool, the wedge -7- being tapered transversely and also axially to conform approximately to the bevel faces -11- and opposite Walls of the slots while the Wedges -7- are relatively thin but conform to the bevels of the opposite faces of the slots and adjacent sides of the fly bars.

The wedges -7- when driven in place not only tightens the inner portions of the fly bars against the opposite walls of the slots but also engage the outer faces of the ribs 12 to force the inner edges of the fly bars tightly against the outer' facesof the bars -9-.

Suitable filler pieces -13- preferably of wood or equivalent water absorbing material are interposed between adjacent faces of the inner portions of the fly bars and between the heads -1- and -2- so as to rest upon the flanges -9-- and to abut against the end faces of the portions of the heads between the slots while their side faces are adapted to impinge against the adjacent faces of the fly bars for reinforcing or bracing the latter against excessive vibration, particularly at points between the heads.

These filler pieces -l-are preferably divided longitudinally and beveled to form opposite wedge-shaped sections -14-- and -14--, one section of each filler piece being provided with a lengthwise groove l5- adapted to receive the adjacent flange -12- of the fly bar which, in turn, serves to hold the filler piece against radial disv placement.

When the filler pieces 13 are placed in operative position the opposite sections A4- and --14- of each filler piece are secured in place by screws -l6- ,which are inserted in the joints from the outer faces of said filler pieces for locking the two seclll) tions 'together and pressing vthem firmly againstrthe adjacent -faces of opposed iy.

bars against centrifugal displacement.

If desired, the adjacent faces of the filler -piece sections -14- and '-14'- ,may be provided with tongue and'groove connections --17-` foradditionally iholding them against relative radial` displacement.

When the filler pieces are placed in opera` tive position their outeredges' may be covered by additional reinforcing strips -18- of wood or equivalent material placed between the inneredges of adjacent impact faces and suitably secured by screws or other fastening means to the filler pieces l ---Mforadditionally braclng Vthe fly bars against inward lateral vibra? tion.

` The o eration of the beater rolljwill now be readi y understood upon reference to the foregoing description and the accompanying drawing from which it is evident ,that lany one of the ily c y end for end andisecured'in operative position without displacing an of thel other bars and Without altering t e angle ofthe impact faces relatively to the medial line aaand without' varying the uniformly spaced relation of the cutting edges as What I claim is:

l. A'fly-ba-r for beater rollshaving one side flat and its other side beveled transversely in o posite directions-from a medial lengthwise 'ne, .said flat side` and the outwardly beveled half of the opposite side forming equal angles with the base of the bar. l

2. A fly-,bar for beater rolls having one side flat and its other side beveled trans- 4versely in o posite directions from a medial lengthwise ine, said flat side andthe outwardly' beveled half of the oppos1te side c forming equal angles with the base of the bar, the opposite ends of the outer half of the bar bemg extended beyond the corresponding ends of the inner half of said bar for the urpose s cified.

3. Af eater ro having peripheral slots, each slot having its opposite walls converging axially at e ual angles to a medlal plane passing throug the axis of the roll, and fly-bars secured in said slots.

4. A'beater roll com rising a drum having a circumferential) series of axlally tapered dove-tailed slots, the opposite walls 'of each slotdisposed on opposite sides and at equal angles to a plane passing throu h the axis of the roll, in combination with y bars seated in the slots and pro'ecting beyond the peripheries of the eads and wedges inserted between one of the walls of the slot and adjacent faces of the ily bars for holding said fly bars in the slots.

5. In a beater roll, axially spaced eo-axlal bars -64- may be reversed lend -heads having peripheral axially alined lslots each dove-tailed radially and its walls tapered longitudinally at equa-l angles to a medial plane passing through the axis of the roll.

f6. A beater roll lcomprising a plurality of axially spaced co-axial heads having alined "dove-tailed slots opening from the periphertapered longitudinally at equal angles to a medial plane passingthrough the axis of the roll, and fly-bars secured in their respectlve slots and'each provided with outwardly converging impact faces at e ual,

angles to the corresponding dove-tailed walls of the slots.` p v v8. vA beater roll comprising a plurality of axially spaced co-axial heads having dovetailed slots opening from the peripheries thereof, the opposite walls of each slot being disposed on opposite sides and at equal angles to a plane passing throughthe axis of the roll, said headsbeing provided with annular'ianges at the bases of the slots to form seats for the fl bars, the outer ends of the slots of the env heads being closed to form abutments, incombination with ily bars seated in said. slots against the flanges and also against said abutmen'ts and projecting beyond the peripheries of the heads, the portions of the fly bars within the slots being provided with lengthwise flanges, and

anges and adjacent faces of the ybars for locking said ily bars to the heads.

9. In a beater roll, co-axial cylinder heads in axially spacedrelation and provided with peripheral dove-tailed slots and annular flanges at the inner ends of the slots, y-bars Vsecured in said -slots, and wooden filler pieces wholly between the heads and between the fly bars and hav-ing their ends resting on said flanges. 1 0. In a beater roll, co-axial cylinder heads in axially spaced relation and providedv with peripheralv dove-tailed slots, ilybars secure in said slots, and wooden filler iecesin .the spaces between the heads and between the fly bars, said liybars and filler pieces having tongue and groove interlocking connections.

wedges insertedin the slots and en aging the 11. Ina beater roll, lcoi-axial cylinder heads in axially spaced relation and provided with peripheral dove-tailed slots, l'y- 5 ing the sections against the adjacent faces of the fly-bars.

12. In a. beater roll having removable Hybars, a filler piece composed of wedge-shaped sections arranged face to face and relatively 10 adjustable transversely.

13. In a beater roll having removable Hybars, a ller piece composed of sections ar.

medew ranged face to face and means for spreading said sections apart.

14; In a beater roll having removable Hybars, a filler piece composed of sections arranged face to face and means for spreading said sections apart, one of said sections being provided with a lengthwise groove in one side for receiving a portionof the adjacent Hy-bar.

I In Witness whereof I have hereunto set my hand this 23rd day of January 1925.

FRANK B. DILTS. 

